Spring Valley

Also known as Far North Dallas, Dallas Midtown, Galleria area, Spring Valley Road corridor, 75240, 75254, 75380, Valley View (historical), Addison (adjacent), Prestonwood (adjacent), Preston Hollow (adjacent)

ADU Pass helps homeowners in Spring Valley — a USPS locale inside Dallas, Dallas County, Texas — navigate the permit paperwork for building an accessory dwelling unit. This locale covers 2 ZIP codes.

2 ZIP codes

Locale-specific ADU details

Site (parcel physics)

Slope:

Mean slope3%
Parcels over 12% slope2%

Soil:

Dominant classHouston Black clay (Vertisol) over Austin Chalk limestone bedrock
Expansive clay risk75%

Lot profile:

Median lot size9,500 sqft
Median lot width75 ft
Median existing FAR0.3
Parcels with alley access35%
Flag-lot parcels3%

Geo-hazards:

Seismic designationA
Parcels in FEMA SFHA7%
Bedrock depth (median)12 ft
Groundwater depth (median)22 ft

Recent ADU permit activity

Window12 months ending 2024-12-31
Approved / withdrawn / denied0 / 0 / 0
Dominant typenone

Utility capacity (upgrade likelihood)

Housing stock age:

% built pre-196022%
% built pre-198068%
Median year built1,974

Electric service drop:

% overhead service55%
Panel-upgrade likelihood45%

Sewer lateral:

Replacement likelihood40%
Typical replacement cost$10,000

Water pressure:

ZoneDallas North Pressure Zone
Typical PSI58 psi
Sprinkler trigger PSI20 psi

Gas availability: available — Full gas service throughout Spring Valley via Atmos Energy Mid-Tex. Texas HB 17 (2021) prohibits Texas cities from adopting all-electric mandates; Dallas has no electrification ordinance.

Locale property values

Median value$525,000
Median tax$8,715/yr
Effective rate1.7%

Spring Valley sits roughly 1.8x the Dallas citywide residential median of $295K. Market character is mid-to-upper-middle Far North Dallas suburban, materially below neighboring Preston Hollow ($1.5M-$2.5M) and Prestonwood ($650K-$1.4M). The single-family ranch pockets (where ADU analysis matters) run $450K-$700K and tend to be 1960s-1970s brick construction on 8,000-12,000 sqft lots. Multifamily / condo parcels are the majority of the locale but are not ADU-relevant. Texas Residence Homestead 10% appraisal cap (Tax Code Sec. 23.23) limits year-over-year homestead assessment growth. Large stretches of Spring Valley are not owner-occupied single-family and therefore do not receive the homestead cap.

Locale market rent

Sq ftRent
400$1,125/mo
600$1,380/mo
800$1,675/mo

Locale HOA prevalence

% parcels under HOA30%

Spring Valley's HOA prevalence is materially lower than single-family Preston Hollow (~55%) or Prestonwood (~95%) because (1) the locale is mostly multifamily where condo-regime rules govern instead of HOAs, and (2) the single-family subdivisions that do exist are generally 1960s-1970s mid-century tracts without the active-HOA infrastructure that defines Preston Hollow subdivisions. Most Spring Valley single-family parcels with recorded deed restrictions have unenforced covenants or covenants that explicitly permit accessory structures with family-member occupancy.

Locale overlays (4)

  • airport-noise-zone — Dallas Love Field AICUZ. Spring Valley sits ~7 miles north-northeast of Love Field and is generally outside the 65 dB DNL noise contour but may touch the 60 dB DNL contour on the locale's southern edge (along LBJ Freeway). DFW International Airport is ~13 miles west and the DFW noise contours do not reach the locale.
    Not a practical construction constraint. Noise attenuation is not required by Dallas residential code outside the 65 dB contour.
  • flood-zone — Farmers Branch Creek and its tributaries flank portions of Spring Valley. FEMA-mapped Special Flood Hazard Areas (Zone AE) follow the creek corridors in narrow strips in the western portion of the locale toward the Dallas North Tollway. Most Spring Valley parcels sit on higher ground on the Austin Chalk upland and are Zone X. · +21d · +12% cost
    Approximately 5-8% of Spring Valley parcels touch mapped SFHA along Farmers Branch Creek. Those parcels require elevation certificates, floodplain-ordinance compliance, and higher flood-insurance premiums. The Dallas Midtown parcel itself is partially in mapped floodplain and has required substantial stormwater-management work.
  • other — The Valley View-Galleria Area Plan (adopted by the Dallas City Council as part of ForwardDallas successor planning and supported by a Tax Increment Financing district) covers the core of the Spring Valley locale — roughly bounded by LBJ Freeway (I-635) on the south, Spring Valley Rd on the north, Preston Rd on the east, and the Dallas North Tollway on the west. The plan supports dense, walkable mixed-use redevelopment anchored on the former Valley View Mall site (now Dallas Midtown).
    Not directly ADU-relevant. The Area Plan governs mixed-use, commercial, and multifamily redevelopment; it does not enable or constrain single-family ADUs. However, owners of the minority single-family parcels inside the Area Plan boundary should expect (a) ongoing adjacent construction noise and traffic during Dallas Midtown buildout (2026-2035), and (b) meaningful upward pressure on both land value and rent levels as the TIF-supported project delivers.
  • other — The majority of Spring Valley parcels are multifamily (MF-1, MF-2, MF-3), mixed-use (MU-1, MU-2, MU-3), commercial (CR, MC), or Planned Development District zoning rather than single-family. Sec. 51A-4.510 (the ADU framework) does NOT apply to these parcels — additional units follow base-district density and FAR caps instead. This is the single most important structural factor for Spring Valley ADU analysis: the majority of parcels are outside the ADU framework entirely.
    Before any ADU design work on a Spring Valley parcel, the owner MUST confirm the base zoning is single-family (R-7.5(A), R-10(A), TH-1(A), or similar) via the Dallas GIS zoning viewer. If the parcel is MF-x, MU-x, CR, MC, or PD, the ADU framework does not apply and the parcel is either (a) already entitled for a denser residential configuration under its base zoning, or (b) regulated by a Planned Development District ordinance that sets its own use list.

Inherited from the city

These sections come from the city page. Click through to the Dallas ADU research for details.

  • legal history
  • size range
  • permitting process & fees
  • permit forms
  • contacts
  • utilities
  • incentives
  • viability
  • resale value impact
  • construction timeline
  • pre-approved plans
  • financing
  • service complexity
Dallas — city ADU rules and incentives

ADU legality: unclear

Texas leaves ADU regulation to local municipalities under home-rule or Dillon-rule authority. Dallas permits ADUs subject to local conditions per its zoning ordinance.

City cost envelope

$117,300 all-in for a 525 sqft ADU (permit + build). Midpoint scenario.

Permit fee bundle: $2,905 (2026-04).

City viability (selected uses)

Long-term rentalyes
Short-term rentalwith-restrictions
Home officeyes
Relative supportyes
Dallas County — county ADU rules and overlays

County regulatory overlays

Dallas County's county-level overlays apply only inside its small unincorporated footprint (under 10% of county land, primarily southeastern Dallas County). The two material overlays at county scope are FEMA-mapped Special Flood Hazard Areas administered by Dallas County Public Works under the county's floodplain ordinance, and the countywide Trinity Common Vision Program governing floodplain management along the Trinity River corridor. Inside incorporated cities — where the vast majority of Dallas County residents and ADU-candidate parcels sit — overlay administration is a city function (e.g., the City of Dallas administers its own Escarpment Zone at Dallas Development Code Art. V and its own Floodplain regulations at Div. 51A-5.100). There is no countywide WUI / wildland-fire hazard overlay of the kind seen in California or Washington; North Texas's fire-hazard regime is ESD-by-ESD rather than a county-administered WUI zone.

  • Dallas County Floodplain Management (FEMA NFIP participation) — A new ADU in a Zone AE parcel must be elevated to or above the Base Flood Elevation per the county ordinance and is generally not permitted as a basement or ground-floor sleeping space.
  • Trinity Common Vision Program — Structures including ADUs proposed within the Common Vision corridor face stricter review than FEMA NFIP alone and may require a No-Rise Certificate from a Texas-licensed engineer.
  • On-Site Sewage Facility (OSSF) jurisdiction — An ADU counts as an additional dwelling for OSSF sizing purposes, which can trigger system expansion on undersized lots and may be infeasible on very small unincorporated parcels.

County permitting (unincorporated parcels)

Dallas County regulates construction in unincorporated areas through the Department of Unincorporated Area Services (DUAS), in partnership with the Dallas County Fire Marshal's Office and Public Works. Because the county has no zoning authority (see countyOrdinance), DUAS does not restrict whether an ADU may be built — it regulates only subdivision/plat compliance, residential building-code inspection, on-site sewage (OSSF) compliance, floodplain compliance, 911 addressing, and nuisance abatement. A detached secondary dwelling on an unincorporated parcel is permitted as an ordinary residential structure through DUAS's building-permit pathway; there is no separate 'ADU permit' because there is no county use category for accessory dwellings. Unincorporated Dallas County comprises under 10% of county land area, primarily in the southeastern corner of the county. Most ADU activity in Dallas County occurs in incorporated cities (notably the City of Dallas ADU Overlay at Dallas Development Code Sec. 51A-4.510), which are governed by city-level permitting, not this section.

DepartmentDallas County Department of Unincorporated Area Services (DUAS)
AddressRecords Building, 500 Elm Street, Suite 6100, Dallas, TX 75202
Phone214-653-6565
Emaildevelopment@dallascounty.org
Texas state — ADU law and programs

State ADU law

Texas has NOT enacted a statewide ADU preemption or ADU-by-right statute. Local governments (municipalities and counties) retain full authority over ADU zoning, setbacks, parking, size limits, owner-occupancy, and permitting. Two recent housing-reform bills in the 89th Legislature (2025) touch density and zoning procedure but do NOT preempt ADU-specific local rules: SB 15 (Bettencourt, signed 2025-06-20, effective 2025-09-01) caps minimum single-family lot sizes in cities over 150,000 in counties over 300,000, and HB 24 (signed 2025-06-20, effective 2025-09-01) raises the protest petition threshold for zoning changes. A dedicated ADU-preemption bill — SB 673 (Hughes, 2025) — passed the Texas Senate on 2025-04-10 and was reported favorably by the House Land & Resource Management Committee on 2025-05-08, but died on the General State Calendar when the 89th Regular Session adjourned on 2025-06-02. In the absence of a state ADU statute, homeowners must consult the ordinance of the municipality (or the county's subdivision rules for unincorporated areas) where the lot sits.

State financing programs

Texas does not operate an ADU-specific statewide loan, grant, or forgivable-loan program comparable to California's CalHFA ADU Grant. The Texas Department of Housing and Community Affairs (TDHCA) administers the state's general housing finance programs — My First Texas Home, My Choice Texas Home, Mortgage Credit Certificates, multifamily Housing Tax Credits, the Homeowner Assistance Fund, and Housing Trust Fund awards. None target ADU construction directly, but several can apply to an ADU as part of a primary-residence purchase or refinance when program criteria are met. ADU-specific financing in Texas is primarily local: the City of Austin's ADU Loan Program (administered through Neighborhood Housing and Community Development) and a handful of smaller pilot programs are the most visible, but these sit at the city tier, not the state tier.

Federal (United States) — ADU-relevant rules and programs

Federal ADU law

The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.

Federal financing programs

Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.

Federal tax credits

There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.

Federal housing programs

HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.

ZIP Codes

  • 75240
  • 75254

Post Office

  • 13770 Noel Rd, 75240